<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>步长--奔跑的熊大</title>
    <style>
        body{
            background-color: #ccc;
        }
        div{
            position: absolute;
            width: 200px;
            height: 100px;
            background: url(images/bear.png) no-repeat;
            /* 一个元素可以添加多个动画，用逗号隔开 */
            animation: bear 1s steps(8) infinite,move 3s forwards;
        }
        @keyframes bear{
            0%{
                background-position: 0,0;
            }
            100%{
                background-position: -1600px 0;
            }
        }
        @keyframes move{
            0%{
                left: 0;
            }
            100%{
                left: 50%;
                /* 使动画或图片在页面水平居中 */
                /* margin-left: -100px; */
                transform: translate(-50%);
            }
        }

    </style>
</head>
<body>
    <div></div>
</body>
</html>